H M's head.

The government has had to legislate to ensure that British postage stamps will continue to feature the monarch's head following the proposed sell-off of Royal Mail's postal service - probably to a Dutch or German concern.  British stamps are the only ones in the world which do not include the name of the country, and the image of the monarch has traditionally been used as identification, and the fear was that, as this simply is a tradition and not a requirement, it could be dropped following privatisation.  Of course, whether or not the service should be sold to a foreign buyer, is another matter....